Eucalyptus: The Sustainable Hardwood Cambodia Is Planting for the Future
Eucalyptus is Cambodia's fast-growing furniture hardwood. Learn its properties, plantation sourcing, and why we use it for sustainable furniture
WOOD TYPES
Eucalyptus: Cambodia's Fast-Growing Furniture Hardwood
Drive east from Phnom Penh towards the Vietnamese border and you will pass through landscapes that have changed dramatically in the past two decades. Where degraded forest or scrubland once stood, rows of slender eucalyptus now stretch across the hills. These are Cambodia's industrial plantations, and they are quietly reshaping the country's timber economy. Eucalyptus grows fast — five to seven years before the first harvest — and that speed is precisely what makes it valuable in a market where the traditional luxury hardwoods are protected, depleted, and increasingly impossible to source legally.
What Is Eucalyptus?
Eucalyptus is not a single species but a genus of over 700 trees and shrubs, most native to Australia. The commercial timber sold as eucalyptus comes from species such as Eucalyptus grandis, Eucalyptus deglupta, Eucalyptus saligna, and hybrids like Eucalyptus urograndis. In Cambodia, the species most commonly planted for commercial timber is a hybrid of Eucalyptus grandis and Eucalyptus urophylla, known for its rapid growth and adaptability to tropical soils. The heartwood colour varies significantly by species and age, ranging from pale pinkish-brown to a deeper reddish-brown. The grain is generally straight to interlocked, with a coarse texture and moderate natural luster.
The Essential Numbers Behind the Wood
Eucalyptus specifications vary widely across species, and this is important for buyers to understand. A commonly planted hybrid, Eucalyptus urograndis, has an average dried weight of 850 kg/m³ and is described as relatively hard, heavy, and strong. Eucalyptus deglupta is lighter, at 500 kg/m³ average dried weight, with a volume density of 454-499 kg/m³. Janka hardness ranges from 915-1,480 lbf for dry material depending on species, with denser species like Jarrah (Eucalyptus marginata) reaching 1,915 lbf dry.
For shrinkage, Eucalyptus deglupta shrinks 2.0% radially and 4.4% tangentially to air-dry condition, giving a T/R ratio of 2.2. Eucalyptus grandis has higher shrinkage, averaging 3.44% radial and 8.36% tangential air-dried, with a T/R ratio of 2.4. This higher shrinkage means eucalyptus requires careful drying and sealing to prevent movement in service.
For a furniture buyer, these numbers describe a wood that can be hard and durable when sourced from the right species, but that requires careful processing. The denser eucalyptus varieties are comparable to teak or acacia in hardness, while lighter varieties are better suited to interior applications where extreme durability is not required. The key is proper kiln drying — rushed drying leads to checking, warping, and collapse, a known issue with some eucalyptus species.
Sourcing and Sustainability For Furniture
This is where eucalyptus stands apart from Cambodia's endangered luxury hardwoods. Eucalyptus is plantation-grown, fast-growing, and not listed on CITES or the IUCN Red List. It is widely available from commercial plantations across Cambodia, including major operations in Stung Treng and Kratie provinces. CamAgra Investment Group, which also manages Acacia plantations, has operated large-scale eucalyptus plantations since 2003, targeting pulp markets in Japan and China as well as domestic processing. Holy Plantation operates roughly 34,000 hectares across Stung Treng and Kratie, supplying eucalyptus and acacia to Cambodian processing plants including Angkor Plywood.
The Cambodian government has actively encouraged this sector as a strategy to reduce reliance on imported processed timber and to build a domestic industrial forestry sector. The fast growth cycle of five to seven years makes eucalyptus attractive to timber companies and to smallholders who can generate supplementary income through planting partnerships or seedling-supply contracts. Unlike the rosewoods and other luxury hardwoods, eucalyptus is legal, renewable, and increasingly available in documented, certified supply chains.
Is Eucalyptus Good for Furniture?
Yes, with important caveats. Eucalyptus is used for furniture, flooring, panelling, and interior finish in many markets. Thai research on a widely planted eucalyptus clone found it suitable for furniture, flooring, and pallets, though not for main structural building applications. The wood machines reasonably well, glues and stains acceptably, and takes a finish that can produce attractive results.
There are two conditions. First, it must be properly dried. Eucalyptus is notorious for drying defects if the process is rushed — collapse, checking, and warping are common in poorly processed material. Kiln-dried eucalyptus, brought to the correct moisture content, is stable in service. Second, it should be sealed. The higher-shrinkage species especially need protection against moisture movement. A well-sealed piece will perform well indoors.
Eucalyptus is good for indoor furniture, particularly pieces where a lighter, more affordable hardwood is appropriate — coffee tables, side tables, cabinets, shelving, and decorative pieces. It is not ideal for outdoor furniture without treatment, and it should not be used for structural applications. It is also not the best choice for pieces requiring the deep, rich colour of rosewood or the extreme hardness of Thnong.
How Eucalyptus Compares
Compared to Acacia, eucalyptus is generally lighter in colour and often lighter in weight. Acacia tends to be harder and denser, and it holds up better in damp conditions. Both are plantation-grown and sustainable. For furniture requiring maximum hardness, acacia has the edge. For lighter, more affordable pieces, eucalyptus is often the better choice.
Compared to Rubberwood, eucalyptus is comparable in weight and workability, though rubberwood has a more uniform colour and is generally easier to finish. Both are sustainable plantation species. Rubberwood has the advantage of being a by-product of an existing agricultural industry, which strengthens its sustainability story. Eucalyptus is planted specifically for timber production.
Compared to the endangered Cambodian hardwoods, eucalyptus lacks their density, colour, and legendary status. It is not a rosewood. It does not pretend to be. But it is legal, plantation-grown, and available in documented quantities. For buyers who want a beautiful, sustainable piece without the ethical burden, eucalyptus is a responsible choice.
How We Work With Eucalyptus
Khmer Wood Design uses eucalyptus selectively, for pieces where its weight and workability suit the design. We source from Cambodian plantations where possible and prioritise suppliers who can evidence legal and sustainable sourcing. We kiln-dry carefully, because eucalyptus punishes rushed processing, and we seal every surface including undersides and drilled holes. Offcuts become Collectibles & Curios. Sawdust goes to local farms for composting. Nothing usable is thrown away. Eucalyptus is not the most glamorous wood in our workshop, but it is an honest one, and it performs well when treated with respect.
Care and Maintenance
Clean eucalyptus with a soft, dry cloth. For sticky spots, use a barely damp cloth with mild soap, then dry immediately. Avoid abrasive cleaners, ammonia, and prolonged direct sunlight. Use coasters and felt pads under objects that might scratch. Because eucalyptus can move with humidity changes, keep the piece away from heat sources and avoid placing it in areas with extreme moisture swings. One specific warning: eucalyptus is photosensitive and may darken or change colour with exposure to light. This is natural patina development, not damage.
Sustainable Alternatives
If you want a piece that is legal, sustainable, and affordable, eucalyptus is one of the options we can offer. It is not rosewood. It does not claim to be. But it is plantation-grown, renewable, and documented. Contact us to discuss a commission in eucalyptus or any of the other sustainable timbers we work with.
FAQs
Is eucalyptus a hardwood? Yes. Eucalyptus is classified as a hardwood. Its density and hardness vary significantly by species, from around 500 kg/m³ for lighter varieties to 850 kg/m³ or more for denser ones.
Is eucalyptus sustainable? Yes. Eucalyptus is plantation-grown, fast-growing, and not listed on CITES or the IUCN Red List. Cambodian plantations supply both domestic processing and export markets.
Does eucalyptus warp? It can warp during drying if the process is rushed. Properly kiln-dried eucalyptus is stable in service. The key is careful drying and sealing.
Is eucalyptus good for outdoor furniture? It can be used outdoors with treatment, but it is not as naturally weather-resistant as teak. Indoor applications are where eucalyptus performs best.
What is a sustainable alternative to rosewood in Cambodia? Eucalyptus, Acacia, and Rubberwood are all plantation-grown, widely available, and legal. Acacia is hardest, Rubberwood is easiest to work, and Eucalyptus offers a middle ground.